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Author Topic:   I-Stock Gearing
Dirt Roller

Total posts: 8
posted February 22, 2005 09:33 AM  
Hello, this is my first post on this board and have to say this place has ALOT of usefull knowlage!

I have a question. I am helping a good friend of mine this year with his I-Stock car. We are currently running a 6.56 final gear ratio and a was wondering why so low? I am used to drag racing and am just learning the circle track stuff!
From all I've heard, I-Stock cars like torque vs. horespower due to the fact that they have to use a 350cfm 2 brrl. If thats the case, and you figure you are probably making peak torque around 2500-3000 rpm, why run such a low gear to get in the higher rpm's?

Thanks for all the info!

Dirt Maniac

Total posts: 130
posted February 22, 2005 09:54 AM  
Some engines such as a 377 like to really be twisted, 6500+. 383s and 406 not so much, say 5800-6200. Most roundy-round engines are cammed to come alive with the higher rpms. Maybe someone with a little more engine knowledge could tell you "why" of it.

[This message has been edited by AtomicPunk (edited February 22, 2005).]

Dirt Forum Champ
Total posts: 5390
posted February 22, 2005 05:39 PM  
with circle track alot of factors go into gear selection motor weight cam track conditions etc like 17j all to keep momemtem i have several gears and would like to have more gearing is important part of setup


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